My girlfriend has a Zenith B27A11Z TV, made in 2000, that has a
vertical deflection problem. It started as the vertical deflection
going out from time to time, and if she tapped on the TV it would come
back. So I said OK, it's probably just a bad solder joint, maybe I
can look at it sometime. But I never got around to looking at it.
Now she says that tapping it doesn't fix it anymore. Sometimes
turning it on and off does, but sometimes that doesn't work either and
if she turns it on and off too many times it stops working altogether
until she unplugs it. Now I'm wondering whether it's really a bad
joint. Of course, she still wants me to look at it. So, are there
any particular points or components that are known to go out on this
model, so that I can hopefully get this thing over with as soon as
possible?